SD card reader no longer functioning

My Samsung Galaxy S4's SD card reader no longer works. It started by randomly ejecting, so I would just take it out and put it back in. One day it stopped reading altogether. I tried cleaning the SD card, I tried putting in a different SD card, but it still doesn't read. Does anybody have an idea as to why it doesn't read? Could it be a hardware issue? It is rooted, so could that be an issue too?

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